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As a reference in daily maintenace process of Boeing 737-800 air plane, The tire groove depth influence justification which is moving on the contaminated runway that could be potential to hydroplaning phenomenon must be reviewed. Tire groove is a pattern on the tire surface that has a function to flow the water in front of the tire to the aft of the tire smoothly through the bottom of the tire. This mechanism let the tire less of a lift force that can be meant as a hydroplaning prevention. To understand hydroplaning phenomenon and groove depth tire influence, a numerical simulation is performed by using a CFD software Numeca Fine/Marine. This simulation is 3D, unsteady fluid dynamic simulation, with an assumption a rigid body tire at a short time after the airplane touch down to the runway (after skidding process) with velocity V = 62.27 m/s. The contaminated runway is modelled as a pool water (flood) on the flat surface runway with its height of 2.54 mm. Numerical simulation on this B 737-800 tire result shows that a hydroplaning phenomenon will happen for tire with groove depth less than 0.4”. This concludes that a lesser groove depth of tire will reduce a tire groove cross sectional area, and will increase a compression force in the bottom at the front of the tire, that will result in increasing a lift force to the tire and finally increasing a chance to hydroplaning process. From this result, furthermore, the influence of this groove depth of B 737-800 tire variation that is run on a contaminated runway can be used as a reference on B 737-800 tire daily maintenance. Abstrak Groove atau ‘kembang” pada ban pesawat merupakan sarana untuk mengalirkan air dari bagian depan menuju bagian belakang melalui bagian bawah ban, tanpa mengangkat ban sehingga dapat mencegah terjadinya hydroplaning . Sehingga, pengaruh nilai kedalaman groove terhadap gaya angkat pada ban pesawat B737-800 yang bergerak di landasan dengan genangan air perlu dijustifikasi dalam proses perawatan harian. Penelitian ini menyimulasikan proses mengalirnya air pada bagian bawah ban dengan menggunakan simulasi numerik (CFD Numeca Fine/Marine ) 3-D unsteady sebagai metode untuk menjustifikasi pengaruh groove . Simulasi dilakukan untuk kondisi gerakan ban pesawat pada saat proses landing (V = 62,275 m/s) beberapa saat setelah touch down (setelah skidding ) dengan ban pesawat dianggap rigid body sebagai kondisi batas. Selanjutnya tinggi genangan air dipilih pada saat runway dinyatakan dalam kondisi flood (tinggi genangan air = 2,54mm). Simulasi tersebut menampilkan hasil perhitungan ban pesawat Boeing 737-800, dengan hydroplaning mulai terjadi ketika kedalaman groove ban berada dibawah 0,4 inch. Hal ini menunjukkan bahwa semakin kecil kedalaman groove , maka semakin kecil luas penampang groove dan semakin besar gaya kompresi yang terjadi pada bagian bawah ban dan semakin memperbesar kemungkinan terjadinya fenomena hydroplaning . Dengan diketahuinya hasil dari simulasi tersebut, maka hasil penelitian ini dapat digunakan sebagai masukan bagi proses maintenance harian pesawat B737-800 dan mampu memberikan suatu hal baru dalam pembelajaran khususnya mengenai fenomena hydroplaning .

jurnal teknologi dirgantara/jurnal teknologi dirgantara

JUSTIFIKASI CFD KEDALAMAN GROOVE BAN PADA PROSES PERAWATAN HARIAN PESAWAT B737-800 AKIBAT HYDROPLANING (B737-800 TIRE GROOVE DEPTH CFD JUSTIFICATION ON ITS DAILY MAINTENANCE PROCESS DUE TO HYDROPLANING)